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United States Biotechnology & Medical Research

Shattuck Labs Inc (STTK)

Track

In the last 90 days, Shattuck Labs Inc. saw a net insider buy of $250,000, with one insider making a purchase. Total insider transactions amounted to $897,979.96, with significant selling activity from officers. The stock has experienced a 30.6% decline over the past 90 days.
Stock chart
Ticker: STTK Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
SIEGALL CLAY B
1 purchase — total 100,000 USD
Buy 9 Jun 2026
Value US$3,923,468.35 | Price 321.01 | Shares 93,789
Planned sale 12 May 2026
Value US$4,315,346.84 | Price 96.24 | Shares 81,583
Proposed sale 12 May 2026
Value US$2,398,521.32 | Price 225.80 | Shares 10,109
Planned sale 12 May 2026
Value US$198,300.00 | Price 6.61 | Shares 30,000
Proposed sale 12 May 2026
Value US$421,200.00 | Price 7.02 | Shares 60,000
Buy 25 Aug 2025
Value US$911,970.92 | Price 0.87 | Shares 1,051,021
Buy 25 Aug 2025
Value US$4,559,855.48 | Price 0.87 | Shares 5,255,106
Buy 25 Aug 2025
Value US$911,970.92 | Price 0.87 | Shares 1,051,021
Buy 25 Aug 2025
Value US$4,559,855.48 | Price 0.87 | Shares 5,255,106
Buy 4 Dec 2024
Value US$166,713.75 | Price 1.25 | Shares 133,371
Sale 4 Dec 2024
Value US$166,713.75 | Price 1.25 | Shares 133,371
Proposed sale 4 Dec 2024
Value US$150,709.23 | Price 1.13 | Shares 133,371
Buy 7 Oct 2024
Value US$44,219.75 | Price 1.21 | Shares 36,500
Buy 28 Jun 2024
Value US$11,700.00 | Price 3.90 | Shares 3,000
Buy 27 Jun 2024
Value US$21,068.24 | Price 3.89 | Shares 5,416
Buy 26 Jun 2024
Value US$50,011.20 | Price 3.47 | Shares 14,400
Planned sale 6 Mar 2024
Value US$51,544.35 | Price 10.53 | Shares 4,895
Planned sale 6 Mar 2024
Value US$68,013.27 | Price 10.53 | Shares 6,459
Planned sale 6 Mar 2024
Value US$48,964.50 | Price 10.53 | Shares 4,650
Proposed sale 6 Mar 2024
Value US$168,522.12 | Price 10.53 | Shares 16,004
Sale 10 Jan 2024
Value US$250,000.00 | Price 10.00 | Shares 25,000
Proposed sale 10 Jan 2024
Value US$250,000.00 | Price 10.00 | Shares 25,000
Buy 26 Apr 2022
Value US$102,837.90 | Price 3.63 | Shares 28,330
Buy 22 Apr 2022
Value US$858.78 | Price 3.67 | Shares 234
Buy 21 Apr 2022
Value US$96,120.81 | Price 3.69 | Shares 26,049
Buy 19 Jan 2022
Value US$20,610.00 | Price 6.87 | Shares 3,000
Buy 18 Jan 2022
Value US$17,525.00 | Price 7.01 | Shares 2,500
Buy 14 Jan 2022
Value US$17,900.00 | Price 7.16 | Shares 2,500
Planned sale 19 Oct 2021
Value US$643,500.00 | Price 19.50 | Shares 33,000
Planned sale 9 Jul 2021
Value US$86,934.56 | Price 26.54 | Shares 3,276
Planned sale 8 Jul 2021
Value US$94,100.58 | Price 26.24 | Shares 3,586
Planned sale 7 Jul 2021
Value US$111,780.18 | Price 26.17 | Shares 4,271
Planned sale 25 Jun 2021
Value US$457,086.34 | Price 28.20 | Shares 16,210
Planned sale 24 Jun 2021
Value US$214,634.11 | Price 28.18 | Shares 7,616
Planned sale 23 Jun 2021
Value US$164,967.45 | Price 28.29 | Shares 5,832
Planned sale 21 Jun 2021
Value US$275,698.84 | Price 29.82 | Shares 9,245
Planned sale 20 Jun 2021
Value US$221,178.75 | Price 29.96 | Shares 7,382
Planned sale 18 Jun 2021
Value US$90,000.00 | Price 30.00 | Shares 3,000
Planned sale 18 Jun 2021
Value US$285,331.46 | Price 29.00 | Shares 9,840
Planned sale 17 Jun 2021
Value US$243,604.86 | Price 28.76 | Shares 8,469
Planned sale 16 Jun 2021
Value US$241,593.29 | Price 27.80 | Shares 8,691
Planned sale 15 Jun 2021
Value US$200,341.63 | Price 27.47 | Shares 7,293
Planned sale 15 Jun 2021
Value US$55,050.60 | Price 27.53 | Shares 2,000
Planned sale 14 Jun 2021
Value US$155,609.47 | Price 29.05 | Shares 5,356
Planned sale 11 Jun 2021
Value US$129,169.16 | Price 29.41 | Shares 4,392
Planned sale 10 Jun 2021
Value US$152,389.52 | Price 28.67 | Shares 5,316
Planned sale 9 Jun 2021
Value US$222,021.41 | Price 29.21 | Shares 7,601
Planned sale 3 Jun 2021
Value US$150,007.08 | Price 27.30 | Shares 5,494
Planned sale 2 Jun 2021
Value US$176,888.20 | Price 27.64 | Shares 6,399
Planned sale 1 Jun 2021
Value US$162,553.29 | Price 27.41 | Shares 5,931
Planned sale 25 May 2021
Value US$128,295.04 | Price 24.87 | Shares 5,159
Planned sale 24 May 2021
Value US$137,647.24 | Price 25.23 | Shares 5,456
Planned sale 21 May 2021
Value US$152,866.56 | Price 25.58 | Shares 5,977
Planned sale 21 May 2021
Value US$108,547.90 | Price 25.07 | Shares 4,330
Planned sale 21 May 2021
Value US$158,844.21 | Price 25.56 | Shares 6,215
Planned sale 20 May 2021
Value US$197,310.53 | Price 26.20 | Shares 7,532
Planned sale 19 May 2021
Value US$190,999.96 | Price 24.65 | Shares 7,747
Planned sale 18 May 2021
Value US$132,933.68 | Price 26.03 | Shares 5,107
Planned sale 17 May 2021
Value US$166,658.98 | Price 26.30 | Shares 6,336
Planned sale 17 May 2021
Value US$104,981.60 | Price 26.25 | Shares 4,000
Planned sale 17 May 2021
Value US$52,542.40 | Price 26.27 | Shares 2,000
Planned sale 17 May 2021
Value US$161,335.38 | Price 26.28 | Shares 6,139
Planned sale 14 May 2021
Value US$291,092.86 | Price 26.24 | Shares 11,095
Planned sale 14 May 2021
Value US$290,756.85 | Price 26.25 | Shares 11,077
Planned sale 13 May 2021
Value US$261,102.97 | Price 25.88 | Shares 10,090
Planned sale 13 May 2021
Value US$255,401.48 | Price 25.91 | Shares 9,856
Planned sale 12 May 2021
Value US$388,637.12 | Price 27.29 | Shares 14,242
Planned sale 11 May 2021
Value US$414,340.88 | Price 28.03 | Shares 14,783
Planned sale 10 May 2021
Value US$220,949.09 | Price 26.98 | Shares 8,188
Planned sale 28 Apr 2021
Value US$175,000.00 | Price 35.00 | Shares 5,000
Planned sale 15 Apr 2021
Value US$215,390.00 | Price 30.77 | Shares 7,000
Buy 14 Oct 2020
Value US$1,105,000.00 | Price 22.10 | Shares 50,000
Buy 14 Oct 2020
Value US$668,308.09 | Price 21.09 | Shares 31,695
Buy 14 Oct 2020
Value US$1,300,796.90 | Price 20.00 | Shares 65,047
Buy 14 Oct 2020
Value US$3,747,580.04 | Price 19.20 | Shares 195,158
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-11 2026-06-09 B Purchase
3.3
SIEGALL CLAY B
Non-Executive Director
93,789 +26.5%
321.01
US$3,923,468 		93,789 +26.5% 321.01 US$3,923,468
2026-05-14 2026-05-12 PlS Planned sale
Shukla Abhinav A.

Chief Technical Officer

Officer
81,583 +7.0%
96.24
US$4,315,347 		81,583 +7.0% 96.24 US$4,315,347
2026-05-14 2026-05-12 PlS Planned sale
Pandite Arundathy N.

Chief Medical Officer

Officer
82,630 -29.4%
413.30
US$1,239,526 		82,630 -29.4% 413.30 US$1,239,526
2026-05-12 2026-05-12 PrS Proposed sale
ARUNTHATHY PANDITE

Officer

Officer
60,000
7.02
US$421,200 		60,000 7.02 US$421,200
2026-05-12 2026-05-12 PrS Proposed sale
Shukla Abhinav A.

Officer

Officer
2,032
7.01
US$14,236 		2,032 7.01 US$14,236
2025-09-02 2025-08-25 B Purchase
3.6
Ashiya Mona
Non-Executive Director
1,051,021 +inf%
0.87
US$911,971 		1,051,021 +inf% 0.87 US$911,971
2025-09-02 2025-08-25 B Purchase
3.6
Ashiya Mona
Non-Executive Director
5,255,106 +inf%
0.87
US$4,559,855 		5,255,106 +inf% 0.87 US$4,559,855
2025-09-02 2025-08-25 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director
1,051,021 +inf%
0.87
US$911,971 		1,051,021 +inf% 0.87 US$911,971
2025-09-02 2025-08-25 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director
5,255,106 +inf%
0.87
US$4,559,855 		5,255,106 +inf% 0.87 US$4,559,855
2024-12-06 2024-12-04 B Purchase
3.2
Redmile Group, LLC
Non-Executive Director Large shareholder
133,371 +2.5%
1.25
US$166,714 		133,371 +2.5% 1.25 US$166,714
2024-12-06 2024-12-04 S Sale
3.2
Redmile Group, LLC
Non-Executive Director Large shareholder
133,371 -2.4%
1.25
US$166,714 		133,371 -2.4% 1.25 US$166,714
2024-12-04 2024-12-04 PrS Proposed sale
3.2
Redmile Group, LLC

Director, 10% Stockholder

Non-Executive Director Large shareholder
133,371
1.13
US$150,709 		133,371 1.13 US$150,709
2024-10-08 2024-10-07 B Purchase
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
36,500 +105.8%
1.21
US$44,220 		36,500 +105.8% 1.21 US$44,220
2024-07-01 2024-06-28 B Purchase
1.4
Brous Tyler
Non-Executive Director
3,000 +1.3%
3.90
US$11,700 		3,000 +1.3% 3.90 US$11,700
2024-07-01 2024-06-27 B Purchase
1.4
Brous Tyler
Non-Executive Director
5,416 +2.4%
3.89
US$21,068 		5,416 +2.4% 3.89 US$21,068
2024-06-26 2024-06-26 B Purchase
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
14,400 +71.6%
3.47
US$50,011 		14,400 +71.6% 3.47 US$50,011
2024-03-08 2024-03-06 PlS Planned sale
Stout Stephen

See Remarks

Officer
4,895 -6.2%
10.53
US$51,544 		4,895 -6.2% 10.53 US$51,544
2024-03-08 2024-03-06 PlS Planned sale
Stout Stephen

See Remarks

Officer
6,459 -7.5%
10.53
US$68,013 		6,459 -7.5% 10.53 US$68,013
2024-03-08 2024-03-06 PlS Planned sale
Stout Stephen

See Remarks

Officer
4,650 -5.5%
10.53
US$48,964 		4,650 -5.5% 10.53 US$48,964
2024-03-06 2024-03-06 PrS Proposed sale
STEPHEN CHARLES STOUT

Officer

Officer
16,004
10.53
US$168,522 		16,004 10.53 US$168,522
2024-01-16 2024-01-10 S Sale
2.3
Neill Andrew R

Chief Financial Officer

Officer
25,000 -12.6%
10.00
US$250,000 		25,000 -12.6% 10.00 US$250,000
2024-01-10 2024-01-10 PrS Proposed sale
2.3
Neill Andrew R

Officer

Officer
25,000
10.00
US$250,000 		25,000 10.00 US$250,000
2022-04-27 2022-04-26 B Purchase
2.8
Golumbeski George
Non-Executive Director
28,330 +107.8%
3.63
US$102,838 		28,330 +107.8% 3.63 US$102,838
2022-04-26 2022-04-22 B Purchase
2.8
Golumbeski George
Non-Executive Director
234 +0.9%
3.67
US$859 		234 +0.9% 3.67 US$859
2022-04-26 2022-04-21 B Purchase
2.8
Golumbeski George
Non-Executive Director
26,049 +inf%
3.69
US$96,121 		26,049 +inf% 3.69 US$96,121
2022-01-19 2022-01-19 B Purchase
1.4
Brous Tyler
Non-Executive Director
3,000 +1.3%
6.87
US$20,610 		3,000 +1.3% 6.87 US$20,610
2022-01-19 2022-01-18 B Purchase
1.4
Brous Tyler
Non-Executive Director
2,500 +1.1%
7.01
US$17,525 		2,500 +1.1% 7.01 US$17,525
2022-01-19 2022-01-14 B Purchase
1.4
Brous Tyler
Non-Executive Director
2,500 +1.1%
7.16
US$17,900 		2,500 +1.1% 7.16 US$17,900
2021-10-21 2021-10-19 PlS Planned sale
Thomson Erin Ator

General Counsel

Officer
33,000 -41.6%
19.50
US$643,500 		33,000 -41.6% 19.50 US$643,500
2021-07-09 2021-07-09 PlS Planned sale
Hornblower Josiah
Non-Executive Director
3,276 -0.1%
26.54
US$86,935 		3,276 -0.1% 26.54 US$86,935
2021-07-09 2021-07-08 PlS Planned sale
Hornblower Josiah
Non-Executive Director
3,586 -0.1%
26.24
US$94,101 		3,586 -0.1% 26.24 US$94,101
2021-07-09 2021-07-07 PlS Planned sale
Hornblower Josiah
Non-Executive Director
4,271 -0.1%
26.17
US$111,780 		4,271 -0.1% 26.17 US$111,780
2021-06-25 2021-06-25 PlS Planned sale
Hornblower Josiah
Non-Executive Director
16,210 -0.5%
28.20
US$457,086 		16,210 -0.5% 28.20 US$457,086
2021-06-25 2021-06-24 PlS Planned sale
Hornblower Josiah
Non-Executive Director
7,616 -0.2%
28.18
US$214,634 		7,616 -0.2% 28.18 US$214,634
2021-06-25 2021-06-23 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,832 -0.2%
28.29
US$164,967 		5,832 -0.2% 28.29 US$164,967
2021-06-22 2021-06-21 PlS Planned sale
Hornblower Josiah
Non-Executive Director
9,245 -0.3%
29.82
US$275,699 		9,245 -0.3% 29.82 US$275,699
2021-06-22 2021-06-20 PlS Planned sale
Hornblower Josiah
Non-Executive Director
7,382 -0.2%
29.96
US$221,179 		7,382 -0.2% 29.96 US$221,179
2021-06-22 2021-06-18 PlS Planned sale
Thomson Erin Ator

General Counsel

Officer
3,000 -3.6%
30.00
US$90,000 		3,000 -3.6% 30.00 US$90,000
2021-06-22 2021-06-18 PlS Planned sale
Hornblower Josiah
Non-Executive Director
9,840 -0.3%
29.00
US$285,331 		9,840 -0.3% 29.00 US$285,331
2021-06-22 2021-06-17 PlS Planned sale
Hornblower Josiah
Non-Executive Director
8,469 -0.3%
28.76
US$243,605 		8,469 -0.3% 28.76 US$243,605
2021-06-16 2021-06-16 PlS Planned sale
Hornblower Josiah
Non-Executive Director
8,691 -0.3%
27.80
US$241,593 		8,691 -0.3% 27.80 US$241,593
2021-06-16 2021-06-15 PlS Planned sale
Hornblower Josiah
Non-Executive Director
7,293 -0.2%
27.47
US$200,342 		7,293 -0.2% 27.47 US$200,342
2021-06-16 2021-06-15 PlS Planned sale
2.3
Neill Andrew R

Chief Financial Officer

Officer
2,000 -3.5%
27.53
US$55,051 		2,000 -3.5% 27.53 US$55,051
2021-06-16 2021-06-14 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,356 -0.2%
29.05
US$155,609 		5,356 -0.2% 29.05 US$155,609
2021-06-11 2021-06-11 PlS Planned sale
Hornblower Josiah
Non-Executive Director
4,392 -0.1%
29.41
US$129,169 		4,392 -0.1% 29.41 US$129,169
2021-06-11 2021-06-10 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,316 -0.2%
28.67
US$152,390 		5,316 -0.2% 28.67 US$152,390
2021-06-11 2021-06-09 PlS Planned sale
Hornblower Josiah
Non-Executive Director
7,601 -0.2%
29.21
US$222,021 		7,601 -0.2% 29.21 US$222,021
2021-06-03 2021-06-03 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,494 -0.2%
27.30
US$150,007 		5,494 -0.2% 27.30 US$150,007
2021-06-03 2021-06-02 PlS Planned sale
Hornblower Josiah
Non-Executive Director
6,399 -0.2%
27.64
US$176,888 		6,399 -0.2% 27.64 US$176,888
2021-06-03 2021-06-01 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,931 -0.2%
27.41
US$162,553 		5,931 -0.2% 27.41 US$162,553
2021-05-25 2021-05-25 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,159 -0.2%
24.87
US$128,295 		5,159 -0.2% 24.87 US$128,295
2021-05-25 2021-05-24 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,456 -0.2%
25.23
US$137,647 		5,456 -0.2% 25.23 US$137,647
2021-05-25 2021-05-21 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,977 -0.2%
25.58
US$152,867 		5,977 -0.2% 25.58 US$152,867
2021-05-25 2021-05-21 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
4,330 -0.2%
25.07
US$108,548 		4,330 -0.2% 25.07 US$108,548
2021-05-25 2021-05-21 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
6,215 -0.2%
25.56
US$158,844 		6,215 -0.2% 25.56 US$158,844
2021-05-20 2021-05-20 PlS Planned sale
Hornblower Josiah
Non-Executive Director
7,532 -0.2%
26.20
US$197,311 		7,532 -0.2% 26.20 US$197,311
2021-05-20 2021-05-19 PlS Planned sale
Hornblower Josiah
Non-Executive Director
7,747 -0.2%
24.65
US$191,000 		7,747 -0.2% 24.65 US$191,000
2021-05-20 2021-05-18 PlS Planned sale
Hornblower Josiah
Non-Executive Director
5,107 -0.2%
26.03
US$132,934 		5,107 -0.2% 26.03 US$132,934
2021-05-17 2021-05-17 PlS Planned sale
Hornblower Josiah
Non-Executive Director
6,336 -0.2%
26.30
US$166,659 		6,336 -0.2% 26.30 US$166,659
2021-05-17 2021-05-17 PlS Planned sale
Thomson Erin Ator

General Counsel

Officer
4,000 -4.2%
26.25
US$104,982 		4,000 -4.2% 26.25 US$104,982
2021-05-17 2021-05-17 PlS Planned sale
2.3
Neill Andrew R

Chief Financial Officer

Officer
2,000 -3.3%
26.27
US$52,542 		2,000 -3.3% 26.27 US$52,542
2021-05-17 2021-05-17 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
6,139 -0.2%
26.28
US$161,335 		6,139 -0.2% 26.28 US$161,335
2021-05-17 2021-05-14 PlS Planned sale
Hornblower Josiah
Non-Executive Director
11,095 -0.3%
26.24
US$291,093 		11,095 -0.3% 26.24 US$291,093
2021-05-17 2021-05-14 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
11,077 -0.4%
26.25
US$290,757 		11,077 -0.4% 26.25 US$290,757
2021-05-17 2021-05-13 PlS Planned sale
Hornblower Josiah
Non-Executive Director
10,090 -0.3%
25.88
US$261,103 		10,090 -0.3% 25.88 US$261,103
2021-05-17 2021-05-13 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
9,856 -0.4%
25.91
US$255,401 		9,856 -0.4% 25.91 US$255,401
2021-05-12 2021-05-12 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
14,242 -0.5%
27.29
US$388,637 		14,242 -0.5% 27.29 US$388,637
2021-05-12 2021-05-11 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
14,783 -0.5%
28.03
US$414,341 		14,783 -0.5% 28.03 US$414,341
2021-05-12 2021-05-10 PlS Planned sale
2.8
Schreiber Taylor

Chief Executive Officer

Executive Director
8,188 -0.3%
26.98
US$220,949 		8,188 -0.3% 26.98 US$220,949
2021-04-30 2021-04-28 PlS Planned sale
Thomson Erin Ator

General Counsel

Officer
5,000 -5.0%
35.00
US$175,000 		5,000 -5.0% 35.00 US$175,000
2021-04-19 2021-04-15 PlS Planned sale
Thomson Erin Ator

General Counsel

Officer
7,000 -6.5%
30.77
US$215,390 		7,000 -6.5% 30.77 US$215,390
2020-10-15 2020-10-14 B Purchase
3.2
Redmile Group, LLC
Non-Executive Director Large shareholder
50,000 +0.9%
22.10
US$1,105,000 		50,000 +0.9% 22.10 US$1,105,000
2020-10-15 2020-10-14 B Purchase
3.2
Redmile Group, LLC
Non-Executive Director Large shareholder
31,695 +0.6%
21.09
US$668,308 		31,695 +0.6% 21.09 US$668,308
2020-10-15 2020-10-14 B Purchase
3.2
Redmile Group, LLC
Non-Executive Director Large shareholder
65,047 +1.2%
20.00
US$1,300,797 		65,047 +1.2% 20.00 US$1,300,797
2020-10-15 2020-10-14 B Purchase
3.2
Redmile Group, LLC
Non-Executive Director Large shareholder
195,158 +3.7%
19.20
US$3,747,580 		195,158 +3.7% 19.20 US$3,747,580
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